FIELD: chemistry.
SUBSTANCE: present invention relates to a method for desalination of phenol resin and apparatus to that end. The disclosed method involves mixing starting components - phenol resin, diisopropyl ether, water and concentrated sulphuric acid at temperature 20-60°C, phase separation of the mixture into a top organic layer, which is a mixture of desalinated phenol resin and ether, and a bottom aqueous layer with subsequent removal of the aqueous layer and distillation of ether from the organic layer and obtaining desalinated phenol resin, wherein the obtained ether is fed to the step for mixing components. The starting components are used in the following weight ratio: resin : ether : water : sulphuric acid = 1 : (0.2-0.6) : (0.7-1.0) : (0.007-0.018), wherein mixing is carried out in turbulent conditions.
EFFECT: present invention enables to obtain desalinated resin with high degree of purity while reducing the cost of the process and the obtained product.
13 cl, 24 ex, 6 tbl, 2 dwg
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